Cabletron Systems SPECTRUM, User Manual

Page: 101 / 150

Configuring Connections 5-5
ATM Configuration
SmartSwitch chassis, use this field to enter the interface number for which
you wish to configure a new circuit. (Remember, each pair of redundant
interfaces shares a single IF index.)
3. In the VPI text box, enter the Virtual Path Identifier you wish to assign to this
connection. Allowable values are 0 to 3; remember, the VPI you assign will be
used to group virtual connections, allowing for channel trunking between ATM
switches.
4. In the VCI text box, enter the Virtual Channel Identifier you wish to assign to
this connection. Allowable values are 0 to 1023
for each VPI. For example,
you could assign the same channel identifier — say, 25 — as many as four
times: once with a VPI of 0, once with a VPI of 1, and so on. Again, remember
that it is the combination of VPI and VCI that will be used to direct cells
through the intermediate switches between the source and destination.
5. Click to add the new permanent circuit to the ATM interface. This
circuit will remain in place until it is manually removed using the
option in the Current Connections window.